Evolved s.r.o.
Founder & Full-Stack Developer
- Built and launched evolved.sk from scratch: React 19, TypeScript, Vite with custom SSR, Node.js + Express backend, MongoDB, and Redis
- Integrated Stripe API (payments, webhooks, invoicing), Packeta shipping API, Heureka XML feed, and VATSense for EU tax rates
- Set up infrastructure: Nginx reverse proxy with SSL/HTTP2, Cloudflare CDN, PM2 process management, Sentry error monitoring
- Implemented security across the stack: JWT auth with httpOnly cookies, CSRF protection, rate limiting, input validation, XSS escaping
- Handled SEO (structured data, SSR, sitemaps), GA4 + Ads conversion tracking, Microsoft Clarity, Google Merchant Center, and GDPR compliance
- Managed marketing, content writing, social media, and paid advertising campaigns
- Built chensconsulting.com for a client: Vercel deployment, Sanity CMS for content management, and Resend for transactional emails
- Shipped full e-commerce platform solo: payments, shipping, invoicing, i18n (SK/EN), and analytics
- Achieved Lighthouse performance score of 93-96 with SSR, lazy loading, and idle-until-urgent hydration